We review a model that was developed to take into account all possible microscopic cascading schemes in a single
species system out to the fifth order using a self-consistent field approach. This model was designed to study the
effects of boundaries in mesoscopic systems with constrained boundaries. These geometric constraints on the
macroscopic structure show how the higher-ordered susceptibilities are manipulated by increasing the surface to
volume ratio, while the microscopic structure influences the local field from all other molecules in the system.
In addition to the review, we discuss methods of modeling real systems of molecules, where efforts are currently
underway.